Insulated container with wheels
The insulated container with integrated wheels and separate compartments addresses the challenges of portable cooler detachment and cooling efficiency by providing a safe and efficient transportation solution with isolated chambers and a pivotable handle.
Patent Information
- Application Number
- PCT/CN2024/092799
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-01-31
- Filing Date
- 2024-05-13
- Publication Date
- 2025-08-07
AI Technical Summary
Portable coolers with wheels are difficult to attach and prone to detachment, making them unsafe for single-person transportation, and they often require separate compartments to maintain effective cooling without moisture transfer.
An insulated container with a main chamber and a separate drawer chamber, equipped with wheels and a pivotable handle, allows for easy transportation and maintains cooling efficiency by isolating compartments to prevent moisture transfer, using injection molding for improved structural integrity and leak prevention.
The insulated container facilitates safe and efficient transportation of heavy loads while maintaining effective cooling by preventing moisture transfer between compartments, enhancing usability and structural integrity through separate chambers and integrated wheels and handles.
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Figure CN2024092799_07082025_PF_FP_ABST
Abstract
Description
INSULATED CONTAINER WITH WHEELS
[0001] CROSS REFERENCE TO RELATED APPLICATION
[0002] This application claims priority to PCT Patent Application No. PCT / CN2024 / 075101 filed on January 31, 2024, entitled “Insulated Container with a Drawer” , which is hereby incorporated by reference in its entirety.FIELD
[0003] The present disclosure generally relates to insulated containers, including insulated containers with wheels.SUMMARY
[0004] In general, systems, devices, and methods for insulated containers with wheels are provided.
[0005] In one aspect, an insulated container is provided that in one embodiment includes a housing having a main chamber and a secondary chamber. The main chamber is configured to receive a cooling agent therein and is at least partially defined by a bottom wall. The secondary chamber is configured to receive a drawer therein and is positioned below the bottom wall. The insulated container also includes a first wheel rotatably coupled to a portion of a first sidewall of the housing. The insulated further includes a handle extending outward from a second sidewall of the housing, with the second sidewall being connected to the first sidewall.
[0006] The insulated container can vary in any number of ways. For example, the bottom wall can have a first portion and a second portion, with the second portion being offset from the first portion. The portion of the first sidewall can be adjacent the second portion of the bottom wall and the secondary chamber can be below the first portion. Each of the first and second portions of the bottom wall can have an incline configured to direct fluid flow towards a drain in a third sidewall of the housing.
[0007] In another example, the insulated container can include a second wheel rotatably coupled to a portion of a fourth sidewall of the housing. The drain can be positioned centrally between the first and second wheels. A rod can be coupled to the first and second wheels, with the rod having at least one curve adjacent the drain.
[0008] In another example, the insulated container can include a panel removably positioned within the main chamber, with the panel being perpendicular to the bottom wall. In still another example, the insulated container can include a panel removably positioned within grooves on an interior surface of each of the first sidewall and a fourth sidewall of the housing, with the panel at least partially defining a first compartment and a second compartment within the main chamber. The insulated container can include a lid hingedly coupled to the first sidewall.
[0009] In yet another example, the insulated container can include the drawer and a channel positioned along an interior surface of a drawer door coupled to the drawer, with the channel being configured to prevent fluid flow into the drawer.
[0010] In still another example, the bottom wall can have a plurality of ribs arranged in a hexagonal pattern. The bottom wall can be of a material having a thermal conductivity of about 0.3 W / m K or less. A ratio of a storage volume of the main chamber and secondary chamber to a total volume of the housing is between about 7: 10 and about 9: 10.
[0011] In another aspect, an insulated container is provided that in one embodiment includes a main chamber at least partially defined by a bottom wall. The insulated container further includes a secondary chamber configured to receive at least one drawer therein. The insulated container also includes a first wheel positioned on a first sidewall of the main chamber. The insulated container still further includes a handle attached to an upper portion of a second sidewall of the main chamber.
[0012] The insulated container can vary in any number of ways. For example, the bottom wall can have an inner surface with a first portion and a second portion, with the second portion being offset from the first portion. The secondary chamber can have a secondary bottom wall colinear with the second portion of the bottom wall of the main chamber. The first wheel can be adjacent to the second portion of the bottom wall. Each of the first and second portions of the bottom wall can have an incline configured to direct fluid flow towards a drain in a side of the main chamber.
[0013] In another example, the insulated container can include a second wheel positioned on a third sidewall of the main chamber. The drain can be positioned centrally between the first and second wheels. A rod can be coupled to the first and second wheels, with the rod having at least one curve adjacent the drain.
[0014] In another example, the insulated container can include a panel removably positioned within the main chamber, with the panel being perpendicular to the first portion of the bottom wall. In still another example, the insulated container can include a panel removably positioned within grooves on an interior surface of each of the first sidewall and a fourth sidewall of the housing, with the panel at least partially defining a first compartment and a second compartment within the main chamber.
[0015] In yet another example, the insulated container can include a pair of drawers and a channel positioned along an interior surface of a drawer door coupled to the pair of drawers, with the channel being configured to prevent fluid flow into the pair of drawers.
[0016] In still another example, the bottom wall can have a plurality of ribs arranged in a hexagonal pattern. The bottom wall can be of a material having a thermal conductivity of about 0.3 W / m K or less.
[0017] In another aspect, an insulated container is provided that in one embodiment includes a housing having a main chamber and a secondary chamber. At least a portion of a bottom wall of the main chamber is coplanar with a bottom wall of the secondary chamber. The insulated container includes a drawer movably disposed within the secondary chamber. The insulated container further includes a first wheel positioned on a front side of the housing adjacent to the portion of the bottom wall of the main chamber that is coplanar with the bottom wall of the secondary chamber. The insulated container also includes a pivotable handle attached to an end wall of the housing, the end wall being connected to the front side.
[0018] The insulated container can vary in any number of ways. For example, the bottom wall of the main chamber can have an incline configured to direct fluid flow towards a drain through a second end wall. In another example, the insulated container can include a second wheel positioned on a back side of the housing, the back side being opposite the front side. The drain can be positioned centrally between the first and second wheels. A rod can be coupled to the first and second wheels, with the rod having at least one curve adjacent the drain.
[0019] In another example, the insulated container can include a panel removably positioned within grooves on an interior surface of each of the front side and a back side of the housing, with the panel at least partially defining a first compartment and a second compartment within the main chamber. The insulated container can include a lid hingedly coupled to the back side of the housing.
[0020] In yet another example, the insulated container can include a channel positioned along an interior surface of a drawer door coupled to the drawer, with the channel being configured to prevent fluid flow into the drawer.
[0021] In still another example, the bottom wall can have a plurality of ribs arranged in a hexagonal pattern. The bottom wall can be of a material having a thermal conductivity of about 0.3 W / m K or less. A ratio of a storage volume of the main chamber and secondary chamber to a total volume of the housing is between about 7: 10 and about 9: 10.BRIEF DESCRIPTION OF DRAWINGS
[0022] This disclosure will be more fully understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
[0023] FIG. 1A is a top perspective view of one embodiment of an insulated container;
[0024] FIG. 1B is a bottom perspective view of the insulated container of FIG. 1A;
[0025] FIG. 1C is a top view of the insulated container of FIG. 1A;
[0026] FIG. 1D is a bottom view of the insulated container of FIG. 1A;
[0027] FIG. 1E is a first end view of the insulated container of FIG. 1A;
[0028] FIG. 1F is a second end view of the insulated container of FIG. 1A;
[0029] FIG. 2A is a perspective view of the insulated container of FIG. 1A without a lid;
[0030] FIG. 2B is another perspective view of the insulated container of FIG. 2A;
[0031] FIG. 3 is another perspective view of the insulated container of FIG. 1A without a lid;
[0032] FIG. 4A is a cross-sectional view of the insulated container of FIG. 1A;
[0033] FIG. 4B is a cross-sectional view of an end of the insulated container of FIG. 1A;
[0034] FIG. 4C is another cross-sectional view of the end of FIG. 4B;
[0035] FIG. 5 is another cross-sectional view of the insulated container of FIG. 1A;
[0036] FIG. 6A is a side view of the insulated container of FIG. 1A without wheels attached thereto;
[0037] FIG. 6B is an end view of the insulated container of FIG. 6A;
[0038] FIG. 7 is another cross-sectional view of the insulated container of FIG. 1A;
[0039] FIG. 8A is a perspective view of the embodiment of the handle of FIG. 1A;
[0040] FIG. 8B is a front view of the handle of FIG. 8A;
[0041] FIG. 8C is a side view of the handle of FIG. 8A;
[0042] FIG. 9A is a cross-sectional view of an alternative end of the insulated container of FIG. 1A;
[0043] FIG. 9B is another cross-sectional view of the end of FIG. 9A;
[0044] FIG. 9C is another cross-sectional view of the end of FIG. 9A;
[0045] FIG. 10A is a top perspective view of another embodiment of an insulated container;
[0046] FIG. 10B is a bottom perspective view of the insulated container of FIG. 10A;
[0047] FIG. 11 is a side view of the insulated container of FIG. 10A;
[0048] FIG. 12A is a perspective view of the insulated container of FIG. 10A without a lid;
[0049] FIG. 12B is a top view of the insulated container of FIG. 12A;
[0050] FIG. 13 is a cross-sectional view of the insulated container of FIG. 10A;
[0051] FIG. 14 is another cross-sectional view of the insulated container of FIG. 10A;
[0052] FIG. 15A is a rear perspective view an alternative handle assembly of the insulated container of FIG. 10A;
[0053] FIG. 15B is a rear view of the insulated container of FIG. 15A;
[0054] FIG. 16A is a cross-sectional view of an alternative axle assembly of the insulated container of FIG. 10A; and
[0055] FIG. 16B is another cross-sectional view of the axle assembly of FIG. 16A.DETAILED DESCRIPTION
[0056] Portable insulated containers, such as coolers, allow items such as beverages and foods to be kept cold while outdoors, in a vehicle, or otherwise outside of a refrigerator or freezer. Portable coolers typically have an insulated internal cavity in which a cooling agent, such as ice or reusable cooler packs, is placed to help cool the items in the cooler. When loaded with items and / or cooling agents, the portable cooler typically becomes very heavy to the point that it can be difficult or unsafe for a single person to lift and carry. Some portable coolers exist with attachable features, such as wheels, that facilitate transportation, however these are typically difficult to attach and are prone to detachment when the portable cooler is lifted up, such as when moving the portable cooler to or from a vehicle. Accordingly, it is desirable for an insulated cooler with wheels that overcome these deficiencies.
[0057] Certain embodiments will now be described to provide an overall understanding of the principles of the structure, function, manufacture, and use of the devices, systems, and methods disclosed herein. One or more examples of these embodiments are illustrated in the accompanying drawings. Those skilled in the art will understand that the devices, systems, and methods specifically described herein and illustrated in the accompanying drawings are non-limiting embodiments and that the scope of the present invention is defined solely by the claims. The features illustrated or described in connection with one exemplary embodiment can be combined with the features of other embodiments. Such modifications and variations are intended to be included within the scope of the present invention.
[0058] Further, in the present disclosure, like-named components of the embodiments generally have similar features, and thus within a particular embodiment each feature of each like-named component is not necessarily fully elaborated upon. Additionally, to the extent that linear or circular dimensions are used in the description of the disclosed systems, devices, and methods, such dimensions are not intended to limit the types of shapes that can be used in conjunction with such systems, devices, and methods. A person skilled in the art will recognize that an equivalent to such linear and circular dimensions can easily be determined for any geometric shape.
[0059] Various systems, devices, and methods for insulated containers with a drawer are provided. In general, an insulated container, such as a portable cooler, includes a drawer. The insulated container includes a main chamber and includes a drawer chamber that is separate from the main chamber and is configured to movably receive the drawer therein. The main chamber is configured to hold a cooling agent that is configured to cool any items in the main chamber and also any items in the drawer. The item (s) in the drawer may thus be separated from the cooling agent to not become wet from moisture in the main chamber, e.g., from the cooling agent melting or defrosting. Additionally, the main and drawer chambers being separate from one another allows one of the main and drawer chambers to be opened, e.g., to access item (s) contained therein, without breaking a seal of the unopened one of the drawer and main chambers. A temperature within the unopened one of the drawer and main chambers may thus be prevented from decreasing so as to help maintain effective cooling of the item (s) contained therein.
[0060] Additionally, the insulated containers described herein include at least one wheel. The at least one wheel described herein may provide one or more benefits to the user. For example, rolling the insulated container along the ground via the at least one wheel may facilitate transportation of heavy loads and / or loads that may otherwise strain the user. As another example, the at least one wheel described herein may stay attached to the insulated container even when the insulated container is lifted. Furthermore, the handle (e.g., a pivotable handle, an extendable handle) allows a user to move the handle to an extended position such that the user may easily maneuver the insulated container. The handle also has a retracted position, such that the user can reduce the footprint of the insulated container for stacking and / or storage purposes. The flexibility provided by the at least one wheel and the handle advantageously increase the overall utility of the insulated container described herein by allowing the insulated container to be easily transported and stored.
[0061] In an exemplary embodiment, an insulated container is manufactured using injection molding. Using injection molding to manufacture the insulated container may allow for finer details and tolerance control than other manufacturing methods, such as rotomolding. Using injection molding to manufacture the insulated container may allow for individual components of the insulated container to be formed separately. Forming components separately may improve overall structural integrity of each individual component and thus overall structural integrity of the fully assembled insulated container. Forming components separately may improve cooling performance since a singular member does not have seams, joints, or other connection areas that would exist if the singular member was instead formed of two or more parts connected together. Forming components separately may help prevent leaks since a singular member does not have seams, joints, or other connection areas where leaks are most likely to develop.
[0062] Further details of insulated containers are provided in PCT Application No. PCT / CN2024 / 075101, the entire contents of which is incorporated by reference herein.
[0063] FIGs. 1A-9C illustrate aspects of an insulated container 500 that includes at least one wheel and a pivotable handle. As shown in FIG. 2A, the insulated container 500 in this embodiment includes a main chamber 602 configured to hold the cooling agent therein, a drawer chamber 604 that is configured to movably receive a drawer 580 therein, a first wheel 522a, a second wheel 522b, and a pivotable handle 530, as will be described in further detail below. The main chamber 602 defines a main opening 603 and the drawer chamber 604 defines a drawer opening 605. The drawer chamber 604 is isolated from the main chamber 602 such that the drawer 580 received in the drawer chamber 604 is also isolated from the main chamber 602. Thus, as the cooling agent defrosts or melts, the cooling agent itself and / or condensation from the cooling agent cannot wet the item (s) in the drawer 580. Similarly, a beverage or other item that accidentally spills or leaks in the main chamber 602 cannot wet or otherwise damage any items in the drawer 580, and vice versa with a beverage or other item that accidentally spills or leaks in the drawer 580 cannot wet or otherwise damage any items in the drawer chamber 604.
[0064] The drawer chamber 604, and thus the drawer 580 received therein, is located vertically below a portion of the main chamber 602, e.g., the drawer chamber 604 and the drawer 580 received therein are closer to a bottom of the insulated container 500 than the main chamber 602. For example, because gravity tends to draw the cooling agent (e.g., ice) in the main chamber 602 vertically down, the cooling agent is urged to settle as close as possible to the drawer chamber 604, and thus the drawer 580 received therein. As another example, air cooled by a cooling agent (e.g., an ice pack) flows towards the bottom of the main chamber 602 as warmer air flows away from the bottom of the main chamber 602. The cooled air can cool the bottom of the main chamber 602 via convection. Opening one of the main chamber 602 and the drawer chamber 604 can cause a temperature inside the open chamber to increase due to temperature of the external environment and thus may reduce effectiveness of the cooling agent’s cooling of item (s) contained in the open chamber. The drawer chamber 604 and the main chamber 602 being isolated from each other allows one of the main chamber 602 and the drawer chamber 604 to be opened, e.g., to access item (s) contained therein, without breaking a seal of the unopened one of the drawer chamber 604 and the main chamber 602. A temperature within the unopened one of the drawer chamber 604 and the main chamber 602 may thus be prevented from decreasing so as to help maintain effective cooling of the item (s) contained therein. Furthermore, a user may choose to place a cooling agent in the drawer 580 in addition to or instead of in the main chamber 602. However, a cooling agent does not need to be placed in the drawer 580 to cool any items in the drawer 580 because the insulated container 500 is configured to allow the cooling agent in the main chamber 602 to cool the item (s) in the drawer 580, as discussed further below.
[0065] The insulated container 500 includes an outer housing 502 and a lid 508 movably coupled to the outer housing 502. The lid 508, e.g., a bottom outer surface of the lid 508, defines a top wall of the main chamber 602 (see for example FIG. 5) . The lid 508 is configured to move between a closed configuration, in which the main opening 603 of the main chamber 602 is covered (e.g., sealed closed) , and an open configuration, in which the main opening 603 of the main chamber 602 is not covered (e.g., not sealed closed) and the cooling agent and any item (s) removably contained in the main chamber 602 are accessible to a user. In other words, with the lid 508 in the open configuration, a top of the main chamber 602 is open and the main chamber 602 is exposed to ambient outside air via the main opening 603. The lid 508 is shown in the closed configuration in FIGs. 1A-1F.
[0066] The lid 508 is hingedly and non-removably coupled to the outer housing 502 via at least one hinge, specifically a first hinge 540a and a second hinge 540b. The hinges 540a, 540b are configured to prevent the lid 508 from being fully removed from the outer housing 502. The hinges 540a, 540b are coupled to a second sidewall 516b of the outer housing 502. Although the lid 508 is shown coupled to the outer housing 502 by two hinges, alternative embodiments can include one hinge or more than two hinges. In still other embodiments, the lid 508 can be removably attached to the outer housing 502 so as to allow the lid 508 to be fully removed from the outer housing 502.
[0067] The insulated container 500 further includes a lid lock 564 configured to lock the lid 508 in the closed configuration. The lid lock 564 is configured to move between, e.g., be manually moved by a user between, a locked configuration, in which the lid 508 is locked in the closed configuration, and an unlocked configuration, in which the lid 508 is allowed to be moved, e.g., be manually moved by a user, from the closed configuration to the open configuration. The lid lock 564 includes a releasable fastener but can have other configurations. A bottom of the lid lock 564 is pivotally attached to the outer housing 502. The lid lock 564 is configured to move between the locked and unlocked configurations by pivoting relative to the outer housing 502 and to the lid 508. A top of the lid lock 564 is configured to releasably engage the lid 508. For example, in the locked configuration the top of the lid lock 564 engages the lid 20 and in the unlocked configuration the top of the lid lock 564 does not engage the lid 508.
[0068] The lid 508 in this illustrated embodiment includes a pair of lock holes 565a, 565b corresponding to a pair of lock holes 665a, 665b formed in the outer housing 502 (see for example FIG. 2A) . With the lid 508 closed, the lid’s lock holes 565a, 565b are configured to align with the outer housing’s lock holes 665a, 665b. The aligned lid lock holes 565a, 565b and outer housing lock holes 665a, 665b are configured to receive therethrough a padlock or other locking mechanism (e.g., a zip tie, a rope, etc. ) to provide a backup lock of the lid 508 in the closed configuration. The lid 508 and the outer housing 502 each include two lock holes in this illustrated embodiment but can include another number (e.g., one, three, etc. ) of lock holes.
[0069] As shown in FIGs. 1A-1F, the lid 508 includes a container holder, for example a first container holder 550a and a second container holder 550b. The first and second container holders 550a, 550b are circular and are thus configured to receive a container, such as a circular container (e.g., cup) . FIGs. 1A-1F show the first and second container holders 550a, 550b are positioned at an end of the lid 508, with the end being adjacent the fourth sidewall 516d. However, the lid 508 can include any number of container holders, such as one, two, three, or more container holders, and can be positioned at any location along the upper surface of the lid 508. Additionally or alternatively, the lid 508 can include container holders of any shape, such as a triangle, a rectangle, an oval, or combination. The container holders can be grooves, depressions, indentations, or a combination thereof.
[0070] The outer housing 502 of insulated container 500 can have a variety of configurations, but in the illustrated embodiment it has a plurality of walls including a first sidewall 516a, a second sidewall 516b, a third sidewall 516c, a fourth sidewall 516d, and a bottom wall 516e. The first sidewall 516a and the second sidewall 516b may form a first pair of sidewalls, where each of first sidewall 516a and the second sidewall 516b may comprise a similar width and height. The third sidewall 516c and the fourth sidewall 516d may form a second pair of sidewalls, where each of third sidewall 516c and the fourth sidewall 516d may comprise a similar width and height. As shown, the width of the first pair of sidewalls is different, e.g., less than, than the width of the second pair of sidewalls, such that the container is generally rectangular. The outer housing 502, and thus the interior cavity, has an open top configured to be selectively covered by the lid 508. Each of the first sidewall 516a, the second sidewall 516b, the third sidewall 516c, and the fourth sidewall 516d of the outer housing 502 extends perpendicular to the bottom wall 516e. For example, each of walls 516a-516e have a thickness in a range of about 1 to about 12.5 mm or between about 2.5 mm and about 11 mm. In an exemplary embodiment, at least one of the walls 516a-516e have a thickness of about 3 mm. In some embodiments, one or more of any of the walls described herein can have a thickness of about 3 mm.
[0071] The insulated container 500 can also include one or more handles. For example, the illustrated insulated container 500 has a first side handle 558 and a second side handle 562. The first side handle 558 is at least partially defined by an upper portion of the third sidewall 516c and the second side handle 562 is at least partially defined by an upper portion of the fourth sidewall 516d. The side handles 558, 562 are integrally formed with the respective sidewalls 516c, 516d and are configured to receive a user’s hand. That is, the side handles 558, 562 are defined by depressions in the respective sidewalls 516c, 516d such that a user can grasp a bottom surface of the lid 508 when the lid 508 is in the closed position. Accordingly, each of the side handles 558, 562 may be used by a user to pick up, push, pull, or otherwise move the insulated container.
[0072] The insulated container 500 in this illustrated embodiment further includes a latch 560. The latch 560 is pivotally attached to the outer housing 502, specifically the first sidewall 516a, and is positioned adjacent the lid lock 564. The latch 560 is configured to receive a user’s hand (e.g., within an opening defined by the latch 560) , such that the user can easily transport the insulated container 500. Thus, the latch 560 can function as a handle. Additionally, movement of the latch 560 can correspond to the functionality of the lid lock 564. For example, the latch 560 is configured to rotate in a first direction (e.g., counterclockwise relative to the outer housing 502) to move the lid lock 564 from an unlocked configuration to a locked configuration. In another example, the latch 560 is configured to rotate in a second direction (e.g., clockwise relative to the outer housing 502) to move the lid lock 564 from the locked configuration to the unlocked configuration. The latch 560 is a separate member from the outer housing 502. In an alternative embodiment, the latch 560 can be formed integrally with the outer housing 502 (e.g., similar to the side handles 558, 562) such that the latch 560 may not rotate. In such an embodiment, the lid lock 564 can be operated independently of the latch 560. The insulated container 500 can include another number of latches 560 and / or have latches at other locations to facilitate portability of the insulated container 500.
[0073] The insulated container 500 includes an upper housing 616 and a lower housing 713 (see for example FIG. 2A) , each configured to be disposed within the outer housing 502 such that the upper and lower housings 616, 713 are contained within the outer housing 502. The upper housing 616 defines the main chamber 602. The lower housing 713 defines the drawer chamber 604. The main chamber 602 and drawer chamber 604 can combine to define a storage volume of the insulated container 500. For example, the insulated container 500 can have a storage volume between about 10 quarts and about 100 quarts, about 25 quarts and about 85 quarts, about 25 quarts and about 35 quarts, about 40 quarts and about 70 quarts, or about 45 quarts and about 65 quarts. In exemplary embodiments, the insulated container 500 can have a storage volume of about 25 quarts, about 30 quarts, about 45 quarts, 50 quarts, 55 quarts, 60 quarts, or about 65 quarts.
[0074] The storage volume can be the same or less than a total volume of the insulated container 500. The total volume corresponds to the outer surfaces of the sidewalls of the outer housing 502. Insulation layers (e.g., foam) between the outer housing 502 and the upper housing and lower housing, respectively, contribute to a storage volume that is less than the total volume. A ratio of the storage volume to the total volume can be between about 1: 2 and about 9: 10, about 3: 5 and about 9: 10, or about 7: 10 and about 9: 10. In an exemplary embodiment, a ratio of the storage volume to the total volume can be about 4: 5. For example, the storage volume can be about 1.47 cubic feet (ft3) and the total volume can be about 1.82 ft3. The ratio of the storage volume to the total volume can be expressed as a percentage, such as about 80.7%.
[0075] As shown in FIGs. 2A-2B and 3, the upper housing 616 has a first sidewall 616a, a second sidewall 616b, a third sidewall 616c, and a fourth sidewall 616d. The upper housing 616 also has a bottom wall having a first bottom wall 620 and a second bottom wall 622. The first and second bottom walls 620, 622 are connected by a connecting wall 624, with the connecting wall 624 being perpendicular to each of the first and second bottom walls 620, 622. Together, the sidewalls 616a-616d, bottom walls 620, 622, and connecting wall 624 define the main chamber 602. The first and second bottom walls 620, 622 are offset from each other. In particular, as shown in FIGs. 2A-2B, the first bottom wall 620 is positioned at a first height relative to the bottom wall 516e of the outer housing 502 and the second bottom wall 622 is positioned at a second height relative to the bottom wall 516e of the outer housing 502, with the second height being less than the first height. For example, the bottom walls 620, 622 can be separated by a distance of between about 50 mm and about 150 mm, about 60 mm and about 120 mm, or about 75 mm and about 95 mm. In an exemplary embodiment, the bottom walls 620, 622 are separated by a distance of about 87 mm. The distance separating the bottom walls 620, 622 corresponds to a height of the connecting wall 624, which is perpendicular to each of the bottom walls 620, 622. Thus, a distance between the opening of the main chamber 602 and the first bottom wall 620 is less than a distance between the opening of the main chamber 602 and the second bottom wall 622. Advantageously, the relative positioning of the bottom walls 620, 622 facilitate storage and / or transportation of goods of varying sizes and shapes. Specifically, objects having a greater height may be positioned on the second bottom wall 622 than objects positioned on the first bottom wall 620.
[0076] The bottom walls 620, 622 are slightly inclined (e.g., an angle of 5 degrees or less) such that a fluid on an upper surface of the bottom walls 620, 622 flows towards a drainage feature of the main chamber 602. For example, the bottom walls 620, 622 each define a downward slope towards the fourth sidewall 616d. Positioned in a bottom portion of the fourth sidewall 616d is a drain 670 that defines a drain opening 672 (see for example FIGs. 3-4B) . The drain 670 is a fluid conduit configured to facilitate draining of liquid (e.g., water from melted ice, spilled beverage, etc. ) from the main chamber 602. The drain 670 is configured to be selectively opened and closed by a user, e.g., by removing a plug 570 (see for example FIG. 1A) sealing an end of the drain 670 closed. With the drain 670 closed, liquid in the main chamber 602 cannot exit out of the main chamber 602 through the drain 670. With the drain 670 open, liquid can exit out of the main chamber 602, and thus out of the insulated container 500, through the drain 670. As shown, the drain 670 and plug 570 are positioned equidistantly between the first and second wheels 522a, 522b. The insulated container 500 includes only one drain 670 in this illustrated embodiment but can include multiple drains. In some embodiments, the drain 670 is omitted.
[0077] The thickness of the bottom walls 620, 622 can be equal to or greater than a thickness of any other sidewall of the upper housing 616. For example, the thickness of the bottom walls 620, 622 can be between about 1 mm and about 12.5 mm, about 5 mm and about 10 mm, about 2.5 mm and about 8.5 mm, about 7 mm and about 11 mm, or about 7 mm and about 8 mm. In an exemplary variation, the thickness of the bottom walls 620, 622 can be between about 7 mm and about 11 mm. The thickness of the bottom walls 620, 622 includes a height of one or more ribs that extend alongside one or more pores (obscured in the figures) . For example, each of the bottom walls 620, 622 can include a plurality of layers. The layers include a first layer L1, which may be referred to as a top surface, and a second layer L2, which may be referred to as a bottom surface, disposed vertically below the first layer L1. The first layer L1 of the bottom walls 620, 622 is a non-porous member. The second layer L2 of the bottom walls 620, 622 is a porous member having a plurality of pores formed therein. The plurality of pores can have a hexagonal cross-sectional shape, which is configured to increase durability of the bottom walls 620, 622 and reduce vertical deflecting of the bottom walls 620, 622 downward under a load of the cooling agent and the item (s) in the main chamber 602 without having to increase overall thickness of the bottom walls 620, 622 above about 11 mm, thereby reducing overall weight of the insulated container 500 and overall cost of the insulated container 500. A deformation factor of the bottom walls 620, 622 can be calculated according to the description provided in PCT / CN2024 / 075101, which is incorporated by reference herein.
[0078] The thickness of the bottom walls 620, 622 can vary. For example, a first portion of each of the bottom walls 620, 622 can have a first thickness and a second portion of each of the bottom walls 620, 622 can have a second thickness. In an exemplary embodiment, the thicknesses of one or more of the bottom walls 620, 622 can vary between about 11 mm and about 7 mm. For example, the portion of one or more of the bottom walls 620, 622 having a lesser thickness can be adjacent to the drain 670, such that an incline towards the drain 670 is formed. In particular, the varying thickness of the bottom walls 620, 622 facilitates a slanted (e.g., sloped) upper surface thereof, such that any liquids in contact with the bottom walls 620, 622 flow towards the drain 670. The bottom walls 620, 622 may combine to define dimensions, such as a length and a width, similar to details provided previously with reference to the bottom walls 620, 622. The thickness of the bottom walls 620, 622 can correspond to the hexagonal shape of the pores. For example, in some variations, each pore can have a length between about 5 mm and about 20 mm, such as about 14 mm.Each pore can have a width between about 0.5 mm and about 2 mm, such as about 1 mm. Each pore can have a height between about 2 mm and about 10 mm. The pore height described herein can provide structural rigidity to the bottom walls 620, 622 without adding significant mass, which may otherwise make it difficult for a user to maneuver the insulated container and / or negatively impact the heat transfer characteristics between the chambers 602, 604.
[0079] The bottom walls 620, 622 can be formed of a material strong enough to resist deflecting downward into the drawer chamber 604, even under the weight of the cooling agent and items located in the main chamber 602. Additionally, the bottom walls 620, 622 have thermal characteristics (e.g., thermal conductivity) configured to, if the drawer 580 is opened, help prevent the bottom walls 620, 622 from rapidly heating from warm or hot air in the drawer chamber 604 and / or the drawer 580 and conducting warm energy to the main chamber 602 from the drawer chamber 604. For example, the bottom walls 620, 622 can have a thermal conductivity between about 0.1 W / m K and about 0.5 W / m K, about 0.2 W / m K and about 0.3 W / m K, or about 0.3 W / m K or less. In an exemplary variation, the bottom walls 620, 622 can have a thermal conductivity of about 0.2 W / m K. In an exemplary embodiment, the bottom walls 620, 622 are formed of polypropylene.
[0080] The main chamber 602 defined by the upper housing 616 is a single cavity. One or more panels can be removably positioned within the main chamber 602 to define one or more compartments. For example, as shown in FIGs. 2A-2B, the inner surfaces of the of the sidewalls 616a, 616b include one or more grooves configured to receive a panel 664. In particular, as shown in FIG. 2B, the sidewall 616a includes a first groove 630a and a second groove 630b. The first and second grooves 630a, 630b extend from the first bottom wall 620 to the upper edge of the 616a that at least partially defines the opening of the main chamber 602. The sidewall 616b, as shown in FIG. 2A, includes similar features, such as a first groove 632a, and a second groove 632b. The first groove 630a of the first sidewall 616a and the first groove 632a of the second sidewall 616b are positioned opposite each other, such that a panel can be slidably positioned within each of the grooves 630a, 632a in a manner parallel to the fourth sidewall 616d. Similarly, the second groove 630b of the first sidewall 616a and the second groove 632b of the second sidewall 616b are positioned opposite each other, such that the panel 664 is slidably positioned within each of the grooves 630b, 632b in a manner parallel to and between the sidewalls 616c, 616d. While the embodiment shown in FIGs. 2A-2B has two grooves on each of the sidewalls 616a, 616b, other embodiments within the scope of this disclosure may not have any grooves, may only have one groove, or may have more than two grooves per sidewall.
[0081] Accordingly, the main chamber 602 can be divided into a plurality of compartments. The number and size of each compartment can be adjusted by a user via inserting one or more panels into the one or more grooves. For example, the main chamber 602 can be divided into a first compartment and a second compartment by positioning the panel 664 within the grooves 630a, 632a or the grooves 630b, 632b. As another example, the main chamber 602 can be divided into a first compartment, a second compartment, and a third compartment by positioning the panel 664 within the grooves 630a, 632a and a second panel within the grooves 630b, 632b. The relative size of the first, second, and / or third compartments may be the same or different. In some embodiments, a panel (i.e., divider wall) is formed integrally with the upper housing 616. In some embodiments, one or more panels can be positioned against the bottom wall 622 in a manner parallel with the walls 616d, 624. Additionally, the panel 664 includes an opening configured to receive a user’s hand, which facilitates easily inserting and / or removing the panel 664 from the main chamber 602. The panel 664 can be manufactured from a plastic, and can have thermal conductivity characteristics similar to the walls described herein. Thus, in some embodiments, the panel 664 can effectively transfer heat between compartments on either side of the panel 664 when the panel 664 is positioned within the main chamber 602. In some embodiments, the panel 664 functions as a fluidic seal between compartments on either side of the panel 664. In some embodiments, the panel 664 can be offset from the bottom wall 620 to define a gap and thus facilitate fluid flow along the bottom wall 620 towards a drainage feature of the insulated container 500.
[0082] As shown in FIGs. 2A and 5, the lower housing 713 has a back wall 713b, a first side wall 713c, a second side wall 713d, a bottom wall 713e, and a divider wall 730 having a first portion 730a, a second portion 730b, and a third portion 730c. The first portion 730a and the second portion 730b are connected by the third portion 730c, with the third portion 730c being perpendicular to each of the first and second portions 730a, 730b. The back wall 713b, the first side wall 713c, the second side wall 713d, the bottom wall 713e, and the divider wall 730 together define the drawer chamber 604. Additionally, the back wall 713b, the first side wall 713c, the bottom wall 713e, and the first portion 730a define a first portion of the drawer chamber 604. The back wall 713b, the second side wall 713d, the bottom wall 713e, and the second portion 730b define a second portion of the drawer chamber 604. The first and second portions 730a, 730b extend from the bottom wall 713e and are configured to support the bottom wall 620. In an exemplary embodiment, the first and second portions 730a, 730b increase a structural rigidity of the bottom wall 620 such that a relatively greater structural load can be placed within the main chamber 602 than in variations without the first and second portions 730a, 730b. In an exemplary embodiment, one or more openings is defined by the third portion 730c such that an insulating material can be placed through the one or more openings and thus positioned between the first portion 730a and the second portion 730b. Accordingly, the divider wall 730 is configured to at least partially inhibit thermal transfer from the first portion of the drawer chamber 604 to the second portion of the drawer chamber 604.
[0083] Each of the back wall 713b, the first side wall 713c, and the second side wall 713d of the lower housing 713 extends perpendicular to the bottom wall 713e and are each substantially planar. The bottom wall 713e of the lower housing 713 extends horizontally and is substantially planar. Additionally, the bottom wall 713e is configured to be coplanar (i.e., colinear) with the bottom wall 622 of the main chamber 602. Advantageously, the relative positions of the bottom walls 713e, 622 further facilitate thermal transfer from any cooling agents within the main chamber 602 to the drawer chamber 604 defined by the lower housing 713 while also maximizing the use of the available volume defined by the outer housing 502. In an exemplary embodiment, each of the walls of the lower housing 713 have a thickness between about 1 mm to about 10 mm. The lower housing 713 is formed of polypropylene.
[0084] The lower housing 713 has an open top. With the lower housing 713 attached to the upper housing 616, the bottom wall 620 of the upper housing 616 defines a top of the drawer chamber 604, as shown in FIG. 5. The bottom wall 620 is non-porous such that liquid or other material cannot enter the drawer chamber 604 from the main chamber 602 through the bottom wall 620. The bottom wall 620 is configured to allow the cooling agent in the main chamber 602 to cool the one or more items contained in the drawer chamber 604, e.g., in the drawer 580 received in the drawer chamber 604. The bottom wall 620 being formed of polypropylene and having a thickness in a range of about 1 mm to about 12.5 mm allows the bottom wall 620 to be thick enough to provide durability and thin enough to provide effective cooling therethrough from the main chamber 602 to the drawer chamber 604, e.g., to allow a typical cooling agent in the main chamber 602 to cool the drawer chamber 604 (and thus the drawer 580 therein) to below a desired temperature, such as between about 10 °F and about 40 °F.
[0085] The drawer chamber 604 defined by the lower housing 713 is configured to receive the drawer 580 therein. The drawer 580 is configured to move between a closed configuration, in which the drawer chamber 604 is sealed closed (e.g., the opening 605 is covered) , and an open configuration, in which the drawer chamber 604 is not sealed closed (e.g., the opening 605 is uncovered) and any item (s) removably contained in the drawer 580 are accessible to a user. The drawer 580 in this illustrated embodiment includes first and second compartments 710, 712 that are separate from one another. The drawer 580 having multiple compartments may improve user experience by allowing item (s) in the drawer 580 to be more easily located and / or may help lessen shifting of item (s) in the drawer 580 during transit (e.g., rolling) of the insulated container 500. In other embodiments, the drawer 580 can have a single compartment or can have more than two compartments. In an exemplary embodiment, the drawer 580 is formed of polypropylene such that the drawer 580 is rigid, which may increase the structural integrity of the insulated container 500 and protect any contents therein.
[0086] Each of the compartments 710, 712 has a plurality of walls. For example, as shown in FIG. 5, the first compartment 710 has a first sidewall 710a, a second sidewall 710b, a third sidewall 710c, a fourth sidewall 710d, and a bottom wall 710e. The sidewalls 710a-710d each extend perpendicular to the bottom wall 710e. Similarly, the second compartment 712 has a first sidewall 712a, a second sidewall 712b, a third sidewall 712c, a fourth sidewall 712d, and a bottom wall 712e. The sidewalls 712a-712d each extend perpendicular to the bottom wall 712e. Additionally, each of the bottom walls 710e, 712e include a plurality of protrusions configured to form a surface for receiving food products thereon. The respective pluralities of protrusions extend at least partially between the first sidewalls 710a, 712a and the second sidewalls 710b, 712b. The bottom walls 710e, 712e are configured to sit adjacent the bottom wall 713e of the lower housing 713.
[0087] The divider wall 730, as shown in FIGs. 4A and 5, is positioned between the first and second compartments 710, 712 of the drawer 580. The divider wall 730 is located below the bottom wall 620 of the main chamber 602, and thus can help provide durability and strength to the insulated container 500, for example, by providing load-bearing support to the bottom wall 620 via the first and second portions 730a, 730b. In some variations, the divider wall 730 can extend across a portion of a width of the bottom wall 620. For example, the divider wall 730 can extend up to about 0.25 of the bottom wall width, up to about 0.5 of the bottom wall width, up to about 0.75 of the bottom wall width, the entire width of the bottom wall width, or between about 0.25 and about 0.75 of the bottom wall width. In an exemplary variation, the divider wall 730 extends across, and thus directly supports, about 0.5 of the bottom wall width. In another exemplary variation, the divider wall 730 extends across, and thus directly supports, the entire bottom wall width.
[0088] As shown in FIG. 1B, the insulated container 500 includes the drawer 580 having a drawer door 582. The drawer door 582 is coupled to each of the first and second compartments 710, 712. The drawer door 582 is removably positioned within the sidewall 516a of the insulated container 500, and is configured to close an opening within the sidewall 516a and the drawer opening 605. For example, the drawer 580 is configured to transition between an open position and a closed position. In the open position, the drawer 580 extends outward from the sidewall 516a. In the closed position, the drawer 580 is positioned within the outer housing 502 and the drawer chamber 604 such that a continuous outer surface is formed by the drawer door 582 and the sidewall 516a. The positioning of the drawer 580 on the sidewall 516a is such that the drawer 580 moves (e.g., transitions between the closed position and the open position) along an axis parallel with an axis of rotation of the wheels 522a, 522b. The drawer door 582 includes a handle 566 configured to be used by a user to apply a force the drawer door 582 and thus facilitate opening and closing the drawer 580. The handle 566 is seated in a depression formed in a front exterior surface of the drawer door 582, which advantageously prevents the handle 566 from protruding outwards and thus facilitates compact storage when not in use.
[0089] As shown in FIG. 1B, the insulated container 500 further includes a drawer lock 568 that is configured to retain the drawer 580 in the closed configuration. The drawer lock 568 is configured to operatively engage with the drawer door 582 such that a user may transition the drawer lock 568 between a locked configuration and an unlocked configuration. In the locked configuration, the drawer 580 is configured to stay securely positioned within the lower housing 713 (i.e., a retracted configuration) . In the unlocked configuration, the drawer 580 can be moved between the retracted configuration to the extended configuration, and vice versa, according to the user’s needs. Further details of the drawer lock 568 are similar to those provided with respect to the lid lock 564.
[0090] As shown in FIG. 7, a channel 840 is defined along an interior surface of the drawer door 582. The channel 840 is configured to prevent fluid from entering the compartments 710, 712. For example, fluid, such as rain, may unintentionally flow through a seam between the drawer door 582 and the sidewall 516a. Any such fluid that flows through the seam can flow in a direction towards one or more of the compartments 710, 712. The channel 840 is configured to be prevent any such flow from entering either of the compartments 710, 712 and instead route the fluid to a location underneath the compartments 710, 712, such as between the compartment bottom walls 710e, 712e and the bottom wall 713e of the lower housing. Advantageously, any contents within the compartments 710, 712 avoid contact with any undesired fluids and thus stay dry.
[0091] As shown in FIGs. 1A-1F, the insulated container 500 includes at least one wheel and at least one mounting pad. For example, the insulated container 500 includes a first wheel 522a and a second wheel 522b. The first and second wheels 522a, 522b are configured to facilitate movement of the insulated container 500 with or without removable contents (e.g., food products) therein. The first wheel 522a is attached to the first sidewall 516a and second wheel 522b is attached to the second sidewall 516b. Each of the first and second wheels 522a, 522b are positioned at a corner of the respective sidewalls 516a, 516b. Furthermore, the bottom wall 516e includes a first mounting pad 572a and a second mounting pad 572b positioned at an end opposite the wheels 522a, 522b. The mounting pads 572a, 572b are configured to receive a ground surface in order to prevent damage and / or contact to any other portion of the bottom wall 516e. While the embodiment shown includes two mounting pads 572a, 572b, alternative embodiments can include less than two mounting pads (e.g., zero, one) or more than two mounting pads (e.g., three, four, or more) .
[0092] Additionally, as shown in FIG. 2B, each of the first and second wheels 522a, 522b are positioned at the same end of the insulated container as the second bottom 622 of the main chamber 602. Advantageously, heavier and / or larger items can be positioned along the second bottom wall 622 and thus be closer to the wheels 522a, 522b, resulting in a smaller moment arm and thus requiring less force to be applied by the user to transport the insulated container 500. For example, the second bottom wall 622 can have a length (i.e., a dimension parallel to the sidewalls 616b, 616a) of between about 50 mm and about 150 mm. In an exemplary embodiment, the second bottom wall 622 has a length of about 100 mm. An axis of rotation of the wheels 522a, 522b can be positioned at distance of between about 30 mm and about 70 mm from the bottom wall 622 along an axis parallel to the length of the bottom wall 622. In comparison, the first bottom wall 620 can be positioned at distance of between about 150 mm and about 250 mm from the axis of rotation of the wheels 522a, 522b. Accordingly, an object placed in contact with the bottom wall 622 will apply a smaller moment arm (calculated by multiplying force by distance) than the same object placed in contact with the bottom wall 620. Therefore, the user can apply a smaller force to maneuver the insulated container 500 when the object is placed in contact with the bottom wall 622 than when the object is placed in contact with the bottom wall 620.
[0093] As shown in FIG. 4B, the wheels 522a, 522b are positioned within a wheelbase of the insulated container 500. For example, the wheel 522a is positioned within the wheelbase 810 and the wheel 522b is positioned within a wheelbase 814. The wheelbase 810 is defined by an indentation in the sidewall 516a and the wheelbase 814 is defined by an indentation in the sidewall 516b. Each of the wheelbases 810, 814 is adjacent the bottom wall 622 of the main chamber 602, such that each of the wheelbases 810, 814 is positioned closer to the bottom wall 622 than the bottom wall 620. The wheelbases 810, 814 each have a depth corresponding to at least a portion of a width of the respective wheels 522a, 522b, such that protrusion of the wheels 522a, 522b from the respective sidewalls 516a, 516b is optimized. For example, the wheelbases 810, 814 can have a depth between about 20 mm and about 45 mm. In an exemplary embodiment, the wheelbases 810, 814 have a depth of about 38 mm. Meanwhile, the wheels 522a, 522b can have a width between about 45 mm and about 55 mm. In an exemplary embodiment, the wheels 522a, 522b have a width of about 49 mm. Accordingly, the wheels 522a, 522b are positioned to protrude by a distance less than the total width of each respective wheel. Advantageously, reducing the protrusion of the wheels 522a, 522b reduces air drag and minimizes risks associated with the wheels 522a, 522b hitting external objects, each of which advantageously increases the utility and ease of maneuvering the insulated container 500. Additionally, the depth of the wheelbases 810, 814 maximizes the dimensions of the main chamber 602 and particularly the dimensions of the bottom wall 622, which advantageously increases the ratio of the storage volume to the total volume described herein.
[0094] As shown in FIGs. 4B-4C, the wheels 522a, 522b are attached to an axle and to the insulated container 500 using at least one bracket. For example, as shown in FIG. 4C, the wheel 522a is coupled an axle 820a. The wheel 522a and axle 820a are configured to rotate together. The axle 820a is configured to be received within an opening of an outer bracket 812a and an inner bracket 816a. The outer bracket 812a is configured to couple to an external surface of the sidewall 516a and the inner bracket 816a is configured to couple to an internal surface of the sidewall 516a. The inner bracket 816a includes an axle support 822a that is coupled to the bottom wall 516e of the outer housing 502. The axle support 822a further defines a lumen and an opening configured to receive the axle 820a. Additionally, the axle support 822a has a length corresponding to a portion of the axle 820a that extends within the outer housing 502, such that deflection (e.g., vertical, horizontal) of the axle 820a while the axle 820a rotates is minimized. For example, the axle support 822a has a length of between about 20 mm and about 40 mm. In an exemplary embodiment, the axle support 822a has a length of 30 mm. A length of the portion of the axle 820a that extends within the outer housing 502 can be between about 20 mm and about 40 mm. In an exemplary embodiment, the length of the portion of the axle 820a that extends within the outer housing 502 is about 35 mm. Advantageously, the length of each of the axle support 822a and axle 820a is configured to avoid contacting other features of the insulated container 500, such as the drain 670 and the sidewall 516d. For example, the axle 820a is configured to maintain a distance from the drain 670 of between about 50 mm and about 100 mm.In an exemplary embodiment, the axle 820a is configured to maintain a distance from the drain 670 of 85 mm. The brackets 812b, 816b are similarly sized and positioned. Thus, the wheels 522a, 522b are structurally and functionally independent from each other. While two wheels are shown, the insulated containers described herein can include one wheel or more than two wheels.
[0095] Furthermore, the inner brackets 816a, 816b are optimally sized and positioned to minimize the volume required to accommodate the brackets 816a, 816b and thus maximize the storage volume relative to the total volume. For example, as shown in FIGs. 4B-4C, the bracket 816a is positioned between the sidewall 616d and the sidewall 516d, such that the axle 820a and axle support 822a can extend into a gap between the sidewalls 516d, 616d. The gap between the sidewalls 516d, 616d can be between about 20 mm and about 60 mm. In an exemplary embodiment, the gap between the sidewalls 516d, 616d is about 40 mm. The bracket 816b is similarly sized as the bracket 816a, such that each of the brackets 816a, 816b can have a width between about 20 mm and about 50 mm. In an exemplary embodiment, the brackets 816a, 816b have a width of about 39 mm. Sizing the brackets 816a, 816b such that the brackets 816a, 816b are large enough to withstand the forces associated with maneuvering the insulated container 500 via the wheels 522a, 522b while small enough to be positioned within the gap between the sidewalls 516d, 616d advantageously increases the ratio of the storage volume to the total volume described herein.
[0096] The respective pairs of inner brackets 812a, 812b and outer brackets 816a, 816b are coupled by a plurality of fasteners (e.g., screws, bolts) . For example, as shown in FIGs. 6A-6B, a plurality of openings 811 is defined within the wheelbase 810, with the plurality of openings 811 being configured to receive a plurality of fasteners for the brackets 812a, 816a. Similarly, a plurality of openings 815 is defined within the wheelbase 814, with the plurality of openings 815 being configured to receive the plurality of fasteners for the brackets 812b, 816b. Therefore, the first outer bracket 812a is coupled to the first inner bracket 816a by a plurality of fasteners positioned within the plurality of openings 811, and the second outer bracket 812b is coupled to the second inner bracket 816b by a plurality of fasteners positioned within the plurality of openings 815.
[0097] In an alternative embodiment, the wheels are functionally independent (e.g., can rotate independently) while being structurally connected. For example, as shown in FIGs. 9A-9C, the first wheel 522a is coupled to an axle that extends through a first outer bracket 912a and a first inner bracket 916a. The details of the outer bracket 912a are similar to those provided with reference to the outer bracket 812a. However, in contrast to the inner bracket 816a that includes an axle support 822a connected to the bottom wall 516e, the inner bracket 916a is connected to a rod 950 that extends above the bottom wall 516e. The road 950 is hollow such that the axle connected to the wheel 522a extends at least partially along a lumen of the rod 950, such that the axle can freely rotate therein. The second wheel 522a is coupled to an axle extending through a second outer bracket 912b and a second inner bracket 916b, each of which are similar to the brackets 912a, 916a, respectively. The rod 950 similarly connects to the second inner bracket 916b, such that the axle of the second wheel 522b can freely rotate therein. Therefore, the rod 950 extends between the first bracket 912a and the second bracket 912b.
[0098] The rod 950 is configured to provide structural rigidity to the wheels 522a, 522b. In particular, the rod 950 is configured to minimize deflection (e.g., horizontal, vertical) of the respective axles as each axle and wheel rotate. Additionally, the rod 950 is configured to resist a compressive force that can be applied to one or more of the wheels 522a, 522b during use, such that the wheels 522a, 522b and / or walls 516a, 516b stay in their intended shapes and / or positions. The rod 950 is not configured to rotate but instead remains in a fixed position. Furthermore, as shown in FIGs. 9A-9C, the rod 950 has at least one curved portion configured to route around the drain 670 and plug 570. Therefore, the rod 950 is positioned adjacent to the drain 670 while avoiding contacting the drain 670. Advantageously, the curved configuration of the rod 950 avoids damaging the drain 670 during use of the cooler, which could otherwise interfere with the drainage function facilitated by the drain 670 and plug 570.
[0099] As shown in FIGs. 1A-1F, the insulated container 500 further includes the handle 530. The handle 530 is configured to be securely attached to the third sidewall 516c. Therefore, the handle 530 is effectively positioned at an end of the insulated container 500 that is opposite the wheels 522a, 522b. Additionally, the handle 530 is configured to pivot relative to the surface of the third sidewall 516c such that a user can easily apply a force to the handle in order to maneuver the insulated container 500 via the wheels. Accordingly, the handle 530 is configured to stay securely attached to the insulated container 500 when the insulated container is empty or fully loaded. For example, the insulated container 500 can contain one or more items (e.g., food items, cooling agents, apparel, and the like) having a mass between 0 lbs and 150 lbs, including any values and sub-ranges therein. Furthermore, the handle 530 is configured to stay securely attached to the insulated container 500 when a static load or a dynamic load is applied directly to the handle 530 or any other portion of the insulated container 500, with the static or dynamic loads having a magnitude associated with a maximum content mass of 150 lbs. Additionally, the static or dynamic loads can further include a mass of the insulated container 500, which can be between about 1 lb and about 30 lbs. In some embodiments, any of the handles and latches described herein can be configured to stay securely attached to the insulated container even when the insulated container is fully loaded and / or experiences a dynamic load.
[0100] The handle 530 includes a first grip 538a, a second grip 538b, and an extension rod 531 that extends between the grips 538a, 538b. The first and second grips 538a, 538b are configured to be handled by the user. Accordingly, the first and second grips 538a, 538b can comprise a material, such as rubber, configured to be increase the comfort of the user during use, but need not. The grips 538a, 538b can be slidably positioned over a first end and a second end, respectively, of the extension rod 531. As shown, the extension rod 531 is substantially linear and provides structural rigidity to each of the first and second grips 538a, 538b.
[0101] The handle 530 also includes a first mounting rod 532 and a second mounting rod 533 connected to the extension rod 531. The mounting rods 532, 533 are configured to transfer a force applied to the grips 538a, 538b to the rest of the insulated container 500. As shown in FIGS. 8A-8B, each of the mounting rods 532, 533 have at least one linear portion and a curved portion. For example, the first mounting rod 532 includes a first portion 532a, a second portion 532b, and a third portion 532c, each of which are substantially linear. A first curved portion connects the first portion 532a to the second portion 532b and a second curved portion connects the second portion 532b to the third portion 532c. The second mounting rod 533 is similarly configured and includes a first portion 533a, a second portion 533b, and a third portion 533c. The curved portions of each of the mounting rods 532, 533 is configured to create a gap between the grips 538a, 538b and the third sidewall 516c when the mounting rods 532, 533 are in a retracted configuration (e.g., positioned parallel to the sidewall 516c) . Advantageously, the separation between the grips 538a, 538b and the third sidewall 516c prevents the user from unintentionally injuring themselves and / or facilitates easy grasping of the grips 538a, 538b without contacting the third sidewall 516c. The first and second mounting rods 532, 533 are further connected by an intermediate rod 534. The intermediate rod 534 is configured to provide structural rigidity to each of the first and second mounting rods 532, 533 in order to prevent bowing and / or deflecting thereof. The intermediate rod 534 is connected to the curved portions between the portions 532b, 532c and the portions 533b, 533c, respectively.
[0102] The mounting rods 532, 533 have a varying width therebetween. As shown in FIG. 8B, a first width W1 corresponds to a distance between the third portions 532c, 533c of each respective mounting rod and a second width W2 corresponds to a distance between the first portions 532a, 533a of each respective mounting rod. The first width W1 is greater than the second width W2. In some embodiments, the first width W1 is between about 4.5 in. and about 7 in., about 5 in. and about 6 in., or about 5.5 in. and about 5.75 in. In an exemplary embodiment, the first width W1 is about 5.6 in. In some embodiments, the second width W2 is between about 3 in. and about 4.5 in., about 3.5 in. and about 4.25 in., or about 3.75 in. and about 4.25 in. In an exemplary embodiment, the second width W2 is about 4.1 in. As shown in FIG. 8B, the second portions 532b, 533b are each positioned at a first angle relative to the respective third portions 532c, 533c to facilitate the varying widths between the mounting rods 532, 533. Additionally, as shown in FIG. 8C, the second portions 532b (obscured in the figure) , 533b are each positioned at a second angle relative to the respective third portions 532c, 533c. The second angle of the second portions 532b, 533b effectively offsets the first portions 532a, 533a from the third portions 532c, 533c, such that the first portions 532a, 533a are parallel with, but not coplanar with, the respective third portions 532c, 533c.
[0103] The handle 530 is configured to move (e.g., pivot) from the retracted configuration to an extended configuration. In particular, the first and second mounting rods 532, 533 are configured to pivotally couple to a handle mount 910 (see for example FIGs. 8A-8B) that is securely coupled to the third sidewall 516c. The first mounting rod 532 has a first pivot mount 536a (i.e., first hinge) and the second mounting rod 533 has a second pivot mount 536b (i.e., second hinge) , with each of the first and second pivot mounts 536a, 536b being connected to the handle mount 910. Additionally, each of the first and second pivot mounts 536a, 536b define a pivot axis for the respective mounting rods 532, 533. For example, in the retracted configuration the portions 532c, 533c of the mounting rods 532, 533 are parallel with the sidewall 516c, and in the extended configuration the portions 532c, 533c define a non-zero angle relative to the sidewall 516c. Accordingly, the mounting rods 532, 533 are configured to pivot, via the pivot mounts 536a, 536b, to an angle relative to the sidewall 516c of between 0 degrees and about 95 degrees, including any value or sub-range therein. The magnitude of the angle advantageously facilitates accommodations for user preference, which may be at least partially based on their height, age, and / or strength. Thus, in an extended configuration (i.e., a first position) , the handle 530 is positioned at a non-zero angle relative to the sidewall 516c (e.g., about 95 degrees) . In a retracted configuration (i.e., a second position) , the handle 530 is positioned at a zero-angle relative to the sidewall 516c. The user can release (e.g., let go) of the handle 530 or apply a force to the handle when the handle 530 is in the extended configuration and the handle 530 can transition to the retracted configuration. In some embodiments, a lock or similar mechanism can be included in the handle 530 that can maintain the handle 530 in the extended configuration, and the lock can be operatively engaged by the user to facilitate the handle 530 transitioning to the retracted configuration.
[0104] In some embodiments, the handle 530, via the pivot mounts 536a, 536b is configured to facilitate a soft close. For example, one or more compressible components (e.g., springs) can be coupled to the pivot mounts 536a, 536b that are configured to reduce a velocity of the mounting rods 532, 533 as the mounting rods 532, 533 transition (e.g., pivot, move) from the extended configuration to the retracted configuration. Advantageously, the reduction in velocity can facilitate a reduction in noise and / or forces associated with the mounting rods 532, 533 coming into contact with the handle mount 910 or any other portion of the insulated container 500, while maintaining enough velocity to ensure the handle 530 can be positioned in the retracted configuration with or without further forces applied by the user.
[0105] The positioning of the wheels 522a, 522b relative to the handle 530 is configured to facilitate easy and convenient transportation of the insulated container 500 by a user. In particular, each of the wheels 522a, 522b is adjacent a first end of the insulated container and the handle 530 is positioned on a second end of the insulated container 500 that is opposite the first end. Therefore, the user can apply a force to the handle 530 (e.g., when the handle 530 is in an extended configuration) such that the insulated container 500 is tilted onto the wheels 522a, 522b. The force can be upwards (e.g., in a direction away from the bottom wall 516e) to tilt the insulated container onto the wheels 522a, 522b. Additionally, a center of gravity of the insulated container 500 can correspond to a location between the handle 530 and the wheels 522a, 522b. Thus, once tilted, the insulated container 500 can be easily pulled or pushed by the user applying a force to the handle 530 to roll the insulated container along a ground surface via the wheels 522a, 522b.
[0106] FIGs. 10A-14 illustrated another embodiment of an insulated container 1500. It is noted that the insulated container 1500 is similar to the insulated container 500. Therefore, similar elements of each insulated container will not be described in detail. The insulated container 1500 generally includes an outer housing 1502, similar to the outer housing 502 described with reference to the insulated container 500. Additionally, the insulated container 1500 includes an upper housing 1616 and a lower housing 1713 (see for example FIGs. 10A, 12A) each configured to be disposed within the outer housing 1502 such that the upper and lower housings 1616, 1713 are contained within the outer housing 1502. The upper housing 1616 defines a main chamber 1602 with a main opening 1603 and the lower housing 1713 defines a drawer chamber 1604 with a drawer opening 1605, with the drawer chamber 1604 configured to receive a drawer 1580. The upper and lower housings 1616, 1713 can be separate housings from one another. The main chamber 1602 and the drawer chamber 1604 can combine to define a storage volume of the insulated container 1500. For example, the insulated container 500 can have a storage volume between about 5 quarts and about 50 quarts, about 20 quarts and about 40 quarts, or about 25 quarts and about 35 quarts. In exemplary embodiments, the insulated container 1500 can have a storage volume of about 25 quarts, about 30 quarts, or about 35 quarts.
[0107] The outer housing 1502 of the insulated container 1500 can have a variety of configurations, but in the illustrated embodiment it has a plurality of walls including a first sidewall 1516a, a second sidewall 1516b, a third sidewall 1516c, a fourth sidewall 1516d, and a bottom wall 1516e. The first sidewall 1516a and the second sidewall 1516b may form a first pair of sidewalls, where each of first sidewall 1516a and the second sidewall 1516b may comprise a similar width and height. The third sidewall 1516c and the fourth sidewall 1516d may form a second pair of sidewalls connecting the first and second sidewalls 1516a, 1516b, where each of third sidewall 1516c and the fourth sidewall 1516d may comprise a similar width and height.
[0108] As shown in FIGs. 10A-10B, the insulated container 1500 includes at least one wheel and at least one mounting pad. For example, the insulated container 1500 includes a first wheel 1522a and a second wheel 1522b. The first and second wheels 1522a, 1522b are configured to facilitate movement of the insulated container 1500 with or without removable contents (e.g., food products) therein. In the illustrated embodiment, the first wheel 1522a is attached to the first sidewall 1516a and the second wheel 1522b is attached to the second sidewall 1516b. Each of the first and second wheels 1522a, 1522b are positioned at a corner of the respective sidewalls 1516a, 1516b. Furthermore, the bottom wall 1516e includes a first mounting pad 1572a and a second mounting pad 1572b positioned at an end of the insulated container 1500 opposite the wheels 1522a, 1522b. The mounting pads 1572a, 1572b are similar to the mounting pads 572a, 572b described herein.
[0109] The wheels 1522a, 1522b are mounted to the insulated container 1500 in a similar manner as the wheels 522a, 522b of the insulated container 500. For example, the wheel 1522a is coupled to an outer bracket 1912a which is fastened to an inner bracket 1916a, with the brackets 1912a, 1916a being similar to the respective brackets 912a, 916a described previously. Similarly, the wheel 1522b is coupled to an inner bracket 1912b and an outer bracket 1916b. Accordingly, the wheels 1522a, 1522b are configured to rotate independently of one another via axles positioned within the brackets 1916a, 1916b, respectively.
[0110] In an embodiment, a rod can connect the axles of the wheels 1522a, 1522b together such that the wheels rotate in unison. For example, a rod (e.g., shaft) similar to the rod 950 described with reference to FIGs. 9A-9C, can connect the axles of the wheels 1522a, 1522b together. In another embodiment, shown in FIGs. 16A-16B, a rod 2950 (e.g., shaft, axle) connects the wheels 1522a, 1522b together. The wheels are coupled to the insulated container in a similar manner (e.g., via brackets) as the wheels 522a, 522b shown in FIGs. 9A-9C. In contrast to the rod 950, which is not configured to rotate but instead allows an axle of each of the wheels 522a, 522b to rotate freely within a lumen of the rod 950, the rod 2950 defines an axle of the wheels 1522a, 1522b. Thus, the rod 2950 is configured to rotate. Additionally, as shown, the rod 2950 is substantially straight, which is in contrast to the rod 950 that includes a plurality of curved portions. Additionally, a plurality of support ribs 2960 are configured to provide structural support to the rod 2950. As shown, the plurality of support ribs 2960 extend from the bottom wall 1516e and contact the rod 2950 while still allowing the rod 2950 to freely rotate.
[0111] The insulated container 1500 includes a lid 1508 movably coupled to the outer housing 502. The lid 1508, e.g., a bottom outer surface of the lid 1508, defines a top wall of the main chamber 1602 (see for example FIG. 14) . The lid 1508 is configured to move between a closed configuration, in which the main opening 1603 of the main chamber 1602 is covered (e.g., sealed closed) , and an open configuration, in which the main opening 1603 of the main chamber 1602 is not covered (e.g., not sealed closed) , in a manner similar to the lid 508 of the insulated container 500. The lid 1508 is shown in the closed configuration in FIGs. 10A-10B. The lid 1508 can be hingedly and non-removably coupled to the outer housing 1502 via at least one hinge, specifically a first hinge 1540a and a second hinge 1540b shown in FIG. 12A. The hinges 1540a, 1540b are configured to prevent the lid 1508 from being fully removed from the outer housing 502. The hinges 1540a, 1540b are coupled to the fourth sidewall 1516d of the outer housing 1502. Although the lid 1508 is shown coupled to the outer housing 502 by two hinges, alternative embodiments can include one hinge or more than two hinges. In still other embodiments, the lid 1508 can be removably attached to the outer housing 1502 so as to allow the lid 1508 to be fully removed from the outer housing 1502. The insulated container 500 further includes a lid lock 1564 and a latch 1560. The lid lock 1564 is similar to the lid lock 564 and is configured to lock the lid 1508 in the closed configuration. The latch 1560 is pivotally attached to the outer housing 1502, specifically the sidewall 1516c, and is positioned adjacent the lid lock 1564. The latch 1560 operates in a similar manner as the latch 560.
[0112] The lid 1508 in this illustrated embodiment includes a pair of lock holes 1565a, 1565b corresponding to a pair of lock holes 1665a, 1665b formed in the outer housing 1502 (see for example FIGs. 12A-12B) . Details of the lock holes 1565a, 1565b are similar to the lock holes 565a, 565b described with reference to the insulated container 500 and details of the lock holes 1665a, 1665b are similar to the lock holes 665a, 665b described with reference to the insulated container 500.
[0113] The sidewalls of the insulated container 1500 can include one or more handles. For example, the illustrated insulated container 1500 has a first side handle 1558 and a second side handle 1562. The first side handle 1558 is at least partially defined by an upper portion of the first sidewall 1516a and the second side handle 1562 is at least partially defined by an upper portion of the second sidewall 1516b. The side handles 1558, 1562 are integrally formed with the respective sidewalls 1516a, 1516b and are configured to receive a user’s hand. That is, the side handles 1558, 1562 are defined by depressions in the respective sidewalls 1516a, 1516b such that a user can grasp a bottom surface of the lid 1508 when the lid 1508 is in the closed position. Accordingly, each of the side handles 1558, 1562 may be used by a user to pick up, push, pull, or otherwise move the insulated container 1500. Additionally, one or more secondary side handles can be defined by the sidewalls 1516a, 1516b such that the user can move the insulated container 1500 regardless of the position of the lid 1508. As shown in FIGs. 10A-10B, the insulated container 1500 includes a first secondary side handle 1559 and a second secondary side handle 1563. The first and second secondary side handles 1559, 1563 are positioned below the first and second side handles 1558, 1562, respectively, relative to a ground surface when the bottom wall 1516e of the insulated container 1500 is positioned on the ground surface. In particular, a portion of the sidewall 1516a protrudes outward between the first side handle 1558 and the first secondary side handle 1559. Thus, a user can position a hand within the depression defined by the secondary side handle 1559 to grasp the protruding portion of the sidewall 1516a, regardless of the position of the lid 1508. Similarly, a portion of the sidewall 1516b protrudes outward between the second side handle 1562 and the second secondary side handle 1563. Thus, a user can position a hand within the depression defined by the secondary side handle 1563 to grasp the protruding portion of the sidewall 1516b, regardless of the position of the lid 1508.
[0114] Furthermore, the insulated container 1500 includes a handle 1530. The handle 1530 is configured to be securely attached to the fourth sidewall 1516d. Additionally, the handle 1530 is a telescoping handle (e.g., a nested handle) configured to extend and retract such that a user can easily apply a force to the handle in order to maneuver the insulated container 1500 via the wheels. Accordingly, the handle 1530 is configured to stay securely attached to the insulated container 1500 when the insulated container is empty or fully loaded. For example, the insulated container 1500 can contain one or more items (e.g., food items, cooling agents, apparel, and the like) having a mass between 0 lbs and 100 lbs, including any values and sub-ranges therein. Furthermore, the handle 1530 is configured to stay securely attached to the insulated container 1500 when a static load or a dynamic load is applied directly to the handle 1530 or any other portion of the insulated container 1500, with the static or dynamic loads having a magnitude associated with a maximum content mass of 100 lbs. Additionally, the static or dynamic loads can further include a mass of the insulated container 1500, which can be between about 1 lb and about 20 lbs. In some embodiments, any of the handles and latches described herein can be configured to stay securely attached to the insulated container 1500 even when the insulated container 1500 is fully loaded and / or experiences a dynamic load.
[0115] The handle 1530 includes a grip 1538. The grip 1538 is generally similar to the grips 538a, 538b and can comprise a material, such as rubber, configured to be increase the comfort of the user during use, but need not. Additionally, the grip 1538 includes a button 1539 (shown in FIG. 10A) that is configured to release or engage one or more locks of the handle 1530 as described further herein. Advantageously, a user may depress the button 1539 to control extension or retraction of portions of the handle 1530 without releasing the grip 1538.
[0116] The handle 1530 includes a plurality of sections that move relative to each other. In an exemplary embodiment, the handle 1530 includes a first set of three telescoping portions, a second set of three telescoping portions, and the grip 1538. For example, the grip 1538 is connected to a first inner extension arm 1535a and a second inner extension arm 1535b. The first inner extension arm 1535a is at least partially positioned within a lumen of a first outer extension arm 1533a, and the second inner extension arm 1535b is at least partially positioned within a lumen of a second outer extension arm 1533b, The first and second inner extension arms 1535a, 1535b are each configured to extend from and retract into the respective outer extension arms 1533a, 1533b. Additionally, the first outer extension arm 1533a is at least partially positioned within a lumen of a first housing 1532a and the second outer extension arm 1533b is at least partially positioned within a lumen of a second housing 1532b. Thus, the arms 1533a, 1535a and housing 1532a together define a first set of telescoping portions, and the arms 1533b, 1535b and housing 1532b together define a second set of telescoping portions. In some embodiments, one or more additional arms (e.g., rods, elongate members, shafts, portions) may be connected to each of the arms 1533a, 1533b that may be positioned within the respective housings 1532a, 1532b. In some embodiments, the handle 1530 includes two, three, four, or more arms that can be operatively positioned in, or extend from, each of the housings 1532a, 1532b.
[0117] The first housing 1532a is coupled to an exterior surface of the sidewall 1516d by a bracket 1537a and a bracket 1539a, with each of the brackets 1537a, 1539a defining at least two openings configured to receive a fastener (e.g., screw, bolt) . The bracket 1537a is positioned adjacent the first wheel 1522a and the bottom wall 1516e, and the bracket 1539a is positioned adjacent the lid 1508. Similarly, the second housing 1532b is coupled to an exterior surface of the sidewall 1516d by a bracket 1537b and a second bracket 1539b. The bracket 1537b is positioned adjacent the second wheel 1522b and the bottom wall 1516e, and the bracket 1539b is positioned adjacent the lid 1508. A first support rod 1534a and a second support rod 1534b each extend between the brackets 1537a, 1537b to increase a structural rigidity of the handle 1530. Each of the housings 1532a, 1532b are perpendicular to the bottom wall 1516e, and extend along at least a portion of a height of the sidewall 1516d.
[0118] The first and second outer extension arms 1533a, 1533b are each configured to extend from and retract into the respective first and second housings 1532a, 1532b. Thus, the handle 1530 has a telescoping configuration. The extension and retraction of the respective components of the handle 1530 is easily adjustable by a user. For example, the user can easily extend portions of the handle 1530 in order to tilt the insulated container 1500 on to the wheels 1522a, 1522b and / or pull the insulated container 1500 along the wheels 1522a, 1522b. An extended configuration of the handle 1530 is shown in FIGs. 10A-10B. Additionally, the user can easily retract portions of the handle 1530 in order to store and / or minimize the size of the insulated container 1500. In a retracted configuration, the outer extension arms 1533a, 1533b are at least partially positioned within the respective housings 1532a, 1532b, and / or the inner extension arms 1535a, 1535b are at least partially positioned within the respective outer extension arms 1533a, 1533b. In the extended configuration or the retracted configuration, the lid 1508 can be opened without contacting the handle 1530.
[0119] One or more locks (e.g., pin locks) can be used to fasten one or more portions of the handle 1530 together to inhibit extension and / or retraction of the handle 1530. For example, a pin can extend from the inner extension arm 1535a that is configured to engage an opening in the outer extension arm 1533a, and / or a pin can extend from the outer extension arm 1533a that is configured to engage an opening in the housing 1532a. Similar pins and openings can be included in the arms 1533b, 1535b and housing 1532b. The button 1539 can be used to retract the pin of the arms (e.g., 1533a, 1535a) such that the user can extend or retract the handle 1530, depending on an initial configuration of the handle 1530. For example, when the handle 1530 is in an extended configuration, the user can depress the button 1539 to retract any pins of the handle 1530 and thus compress the handle 1530 into the retracted configuration by applying a pushing force to the grip 1538. Conversely, when the handle 1530 is in a retracted configuration, the user can depress the button 1539 to retract any pins of the handle 1530 and thus extend the handle 1530 into the extended configuration by applying a pulling force to the grip 1538.
[0120] The positioning of the wheels 1522a, 1522b relative to the handle 1530 is configured to facilitate easy and convenient transportation of the insulated container 1500 by a user. In particular, each of the wheels 1522a, 1522b and handle 1530 are positioned near or on the same end of the insulated container 1500. Therefore, the user can apply a force to the handle 1530 such that the insulated container 1500 is tilted onto the wheels 1522a, 1522b. The force can be downwards (e.g., in a direction towards the bottom wall 1516e) and / or outwards (e.g., in a direction parallel with the bottom wall 1516e) to tilt the insulated container onto the wheels 1522a, 1522b. Additionally, a center of gravity of the insulated container 1500 can correspond with a location at or near the wheels 1522a, 1522b. Thus, once tilted, the insulated container 1500 can be easily pulled or pushed by the user applying a force to the handle 1530 to roll the insulated container along a ground surface via the wheels 1522a, 1522b.
[0121] An alternative handle 2530 is shown in FIGs. 15A-15B. The handle 2530 is generally similar to the handle 1530 so similar elements will not be described in detail. The handle 2530 is shown in a retracted configuration and can be extended to the extended configuration shown with respect to the handle 1530 in FIGs. 10A-10B. The handle 2530 includes a first housing 2532a and a second housing 2532b. The housings 2532a, 2532b are fastened to the sidewall 1516d in a similar manner as the housings 1532a, 1532b described herein. The plug 1570 (and drain associated therewith) are positioned between the housings 2532a, 2532b. In contrast to the housings 1532a, 1532b, the housings 2532a, 2532b have a reduced height such that the housings 2532a, 2532b only extend along a portion (e.g., about half) of a height of the sidewall 1516d. An extension arm 2533a is positioned within the housing 2532a and an extension arm 2533b is positioned within the housing 2532b. One or more extension arms are operatively positioned within the extension arms 2533a, 2533b in a telescoping manner, similar to the handle 1530. For example, two extension arms are positioned within each of the extension arms 2533a, 2533b, such that the handle 2530 defines a three-segment telescoping handle. Furthermore, in contrast to the handle 1530 which had two support rods 1534a, 1534b, the handle 2530 includes a single support rod 2534 that extends between the extension arms 2533a, 2533b. Additionally, the handle 2530 further includes a grip 2538 that is generally similar to the grip 1538.
[0122] As shown in FIGs. 12A-12B, the upper housing 1616 has a first sidewall 1616a, a second sidewall 1616b, a third sidewall 1616c, a fourth sidewall 1616d, and a bottom wall 1620. Each of the sidewalls 1616a-1616d is perpendicular to the bottom wall 1620. The sidewalls 1616a-1616d and bottom wall 1620 together define the main chamber 1602, with the main chamber 1602 being a single cavity. One or more panels can be removably positioned within the main chamber 1602 to define one or more compartments. For example, as shown in FIGs. 12A-12B, the inner surfaces of the of the sidewalls 1616c, 1616d include one or more grooves configured to receive a panel. In particular, as shown in FIG. 12B, the sidewall 1616c includes a first groove 1630 and the sidewall 1616d includes a second groove 1632. The first and second grooves 1630, 1632 extend from the bottom wall 1620 to an upper edge of the respective sidewalls 1616c, 1616d. Thus, a panel positioned within the grooves 1630, 1632 is positioned perpendicular to an axis of rotation of the wheels 1522a, 1522b.
[0123] The bottom wall 1620 includes one or more features configured to receive a panel and / or facilitate drainage flow of a fluid thereon. For example, the bottom wall 1620 is slightly inclined such that a fluid on an upper surface of the bottom wall 1620 flows towards a drainage feature of the main chamber 1602. For example, the bottom wall 1620 defines a downward slope towards the fourth sidewall 1616d. Positioned in a bottom portion of the fourth sidewall 1616d is a drain 1670 that defines a drain opening 1672 (see for example FIGs. 12A-12B, 14) . The drain 1670 is similar to the drain 670. Additionally, the drain 1670 is configured to be selectively opened and closed by a user, e.g., by removing a plug 1570 for sealing an end of the drain 1670 closed. The plug 1570 is positioned within a depression 1571 defined in an exterior surface of the outer sidewall 1516d. As shown, the drain 1670 and plug 1570 are positioned equidistantly between the first and second wheels 1522a, 1522b.
[0124] The drawer chamber 1604, and thus the drawer 1580 received therein, is located vertically below a portion of the main chamber 1602, e.g., the drawer chamber 1604 and the drawer 1580 received therein are closer to the bottom wall 1516e than the main chamber 1602. The drawer 1580 in this illustrated embodiment includes a compartment 1710 (as shown in FIGs. 13-14) . The compartment 1710 is similar to the compartment 710 and includes a first sidewall 1710a, a second sidewall 1710b, a third sidewall 1710c, a fourth sidewall 1710d, and a bottom wall 1710e. The sidewalls 1710a-1710d each extend perpendicular to the bottom wall 1710e. Additionally, the bottom wall 1710e includes a plurality of protrusions configured to form a surface for receiving food products thereon. The bottom wall 1710e is configured to sit adjacent the bottom wall 1713e of the lower housing 1713. Further details of the compartment 1710 are similar to the compartment 710 described herein. In contrast to the insulated container 500, in which the drawer 580 extends from the sidewall 516a in a manner parallel with an axis of rotation of the wheels 522a, 522b, the drawer 1580 extends from the sidewall 1516c in a manner perpendicular to an axis of rotation (e.g., as defined by an axle) of the wheels 1522a, 1522b. Additionally, the handle 1530 is positioned on the sidewall 1516d that is opposite the sidewall 1516c on which the drawer 1580 is positioned.
[0125] As shown in FIG. 10A, the drawer 1580 includes a drawer door 1582. The drawer door 1582 is coupled to the compartment 1710. The drawer door 1582 is positioned within the sidewall 1516c of the insulated container 1500, and is configured to close an opening within the sidewall 1516c and the drawer opening 1605. For example, the drawer 1580 is configured to transition between an open position and a closed position. In the open position, the drawer 1580 extends outward from the sidewall 1516c. In the closed position, the drawer 1580 is positioned within the outer housing 1502 and drawer chamber 1604 such that a continuous outer surface is formed by the drawer door 1582 and the sidewall 1516c. The positioning of the drawer 1580 on the sidewall 1516c is such that the drawer 1580 moves (e.g., transitions between the closed position and the open position) along an axis perpendicular to an axis of rotation of the wheels 1522a, 1522b. The drawer door 1582 includes a handle 1566 that is similar to the handle 566 described herein. Additionally, the insulated container 1500 further includes a drawer lock 1568 that is configured to retain the drawer 1580 in the closed configuration. The drawer lock 1568 operates in a similar manner as the drawer lock 568 described herein.
[0126] The insulated containers described herein can be manufactured using injection molding. Using injection molding to manufacture the insulated container may allow for finer details and tolerance control than other manufacturing methods, such as rotomolding (also referred to as rotational molding) . For example, a bottom surface of an upper housing including a hexagonal rib structure as discussed above is possible to form using injection molding but would not be possible to form with as much fine detail and as much tolerance control using other manufacturing methods, such as rotomolding. Having a detailed hexagonal rib structure that allows for a very small manufacturing tolerance may help ensure that the hexagonal rib structure provides the durability and thermal effects discussed herein. For another example, a vertically-extending divider wall of a lower housing and a drawer having a corresponding shape configured to abut the lower housing’s vertically-extending divider wall is possible to form using injection molding but would not be possible to form with as much fine detail and as much tolerance control using other manufacturing methods, such as rotomolding. Having a detailed vertically-extending divider wall of a lower housing and a drawer having a corresponding shape that allows for a very small manufacturing tolerance may help ensure that the drawer abuts the vertically-extending divider wall so as to minimize any thermal loss from within the drawer. For yet another example, guidance rail features of a drawer are configured to aid in opening and closing the drawer, as will be appreciated by a person skilled in the art. Forming the drawer’s and the lower housing’s guidance rail features with the detail and tolerance control of injection molding may help ensure secure mating of the guidance rail features so as to minimize any thermal loss from within the drawer and / or may help smooth sliding of the drawer in and out of the lower housing’s drawer chamber. For another example, forming a lid and an outer housing with injection molding may help ensure that a lid lock securely locks the lid in a closed configuration to maintain a complete seal of a main chamber within the outer housing (e.g., within an upper housing disposed within the outer housing) because of the fine detail and manufacturing control allowed by injection molding. For still another example, forming a drawer and an outer housing with injection molding may help ensure that a drawer lock securely locks the drawer in a closed configuration to maintain a complete seal of the drawer because of the fine detail and manufacturing control allowed by injection molding. For yet another example, forming an outer housing with injection molding may allow for a channel to be formed in the outer housing that is configured to seat therein a sealing gasket configured to help seal a closed drawer. The channel is also configured for detents to be mounted therein configured to engage corresponding indentations of a closed drawer and thereby help keep the drawer closed. The fine detail and tolerance control allowed by injection molding may help ensure that the sealing gasket seats securely therein to form as complete a seal as possible and may help ensure that the detents are of proper size and shape to engage the drawer.
[0127] Using injection molding to manufacture the insulated container may allow for individual components of the insulated container to be formed separately. Forming components separately may improve overall structural integrity of each individual component and thus overall structural integrity of the fully assembled insulated container. Forming components separately may improve cooling performance since a singular member does not have seams, joints, or other connection areas that would exist if the singular member was instead formed of two or more parts connected together. For example, forming an upper housing as a singular member may improve cooling performance since there are not seams, joints, or other connection areas in the upper housing through which coolness provided by a cooling agent in the main chamber can escape. For example, forming a drawer as a singular member may improve cooling performance since there are not seams, joints, or other connection areas in the drawer through which coolness in the drawer chamber can escape. Forming components separately may help prevent leaks since a singular member does not have seams, joints, or other connection areas where leaks are most likely to develop. For example, forming an upper housing as a singular member may help prevent melted ice from leaking out of the main chamber. For another example, forming a drawer as a singular member may help prevent liquid spilled out of a bottle in a first compartment of the drawer from leaking into a second compartment of the drawer or out of the drawer at all.
[0128] In general, an injection molding process includes injecting a molten material into a mold and then allowing the material to cool and harden in the mold. Injection molding is a relatively high-pressure process since a compressive force is applied to the mold during the cooling and hardening process to help keep the mold closed. Also, the mold is still during the cooling and hardening process.
[0129] In general, a rotomolding process includes filling a mold with a material and heating the filled mold (e.g., in an oven) while the filled mold rotates. The filled mold is then removed from heat and allowed to cool so the material in the mold cools and hardens in the mold. Rotomolding is a relatively low-pressure process since a compressive force is not applied to the mold during the rotating or cooling stages of rotomolding.
[0130] As discussed above, an insulated container can include an upper housing, a lower housing, an outer housing, a lid, and a drawer. In an exemplary embodiment, each of the upper housing, the lower housing, the outer housing, the lid, and the drawer are formed with injection molding. The material of the upper housing, the lower housing, the outer housing, the lid, and the drawer is polypropylene in an exemplary embodiment, although other materials are possible. Polypropylene has a high enough flow rate to be used in injection molding while also providing the rigidity needed for structural integrity of the insulated cooler. In some embodiments, an ultraviolet (UV) resistant material can be used to form at least the outer housing and / or can be used as a coating on the outer housing, which may help improve insulating properties of the insulated container.
[0131] Each of the upper housing, the lower housing, the outer housing, the lid, and the drawer is separately formed with injection molding so as to each be a singular member. After being formed, the upper housing, the lower housing, the outer housing, the lid, and the drawer are assembled along with other components of the insulated container, e.g., vertically-extending divider wall in the main chamber of the upper housing, insulating material, etc. The upper housing, the lower housing, the outer housing, the lid, and the drawer can be made in any order, and assembly of one or more of the upper housing, the lower housing, the outer housing, the lid, and the drawer may begin before one or more other components of the insulated container have been made.
[0132] In an exemplary embodiment, assembly of the insulated container includes fixedly securing the upper and lower housings together such that a bottom wall of the upper housing defines a top wall of a drawer chamber defined by the lower housing and such that the bottom wall separates the drawer chamber from a main chamber defined by the upper housing. As discussed above, with the upper and lower housings disposed in the outer housing, space is defined between the outer housing and the upper and lower housings. The assembly of the insulated container also includes filling the space with an insulating material. The insulating material is polyurethane foam in an exemplary embodiment, but other materials are possible. Further, in an exemplary embodiment, the same insulating material is used throughout the insulated container, but in some embodiments, an insulated container can include two or more different insulating materials.
[0133] Assembly of the insulated container also includes coupling the drawer to the lower housing, e.g., disposed in the drawer in the drawer chamber. In an exemplary embodiment, the drawer is coupled to the lower housing after the lower housing has been fixedly secured to the upper housing and disposed in the outer housing and after insulating material has filled space defined between the outer housing and the upper and lower housings. A front space of the drawer is also filled with insulating material, as discussed above, which, in an exemplary embodiment, occurs prior to the drawer being coupled to the lower housing.
[0134] Assembly of the insulated container also includes coupling the lid to the upper housing. In an exemplary embodiment, the lid is coupled to the upper housing after the upper housing has been fixedly secured to the lower housing and disposed in the outer housing and after insulating material has filled space defined between the outer housing and the upper and lower housings. The lid is also filled with insulating material, as discussed above, which, in an exemplary embodiment, occurs prior to the lid being coupled to the upper housing.
[0135] For insulated containers that include a removable vertically-extending divider wall in the main chamber, assembly of the insulated container also includes disposing the vertically-extending divider wall in the main chamber. In an exemplary embodiment, the vertically-extending divider wall is disposed in the main chamber after the upper housing has been fixedly secured to the lower housing and disposed in the outer housing and after insulating material has filled space defined between the outer housing and the upper and lower housings.
[0136] For insulated containers that include a wheel, assembly of the insulated container also includes rotatably coupling a first wheel to a first side of the insulated container and a second wheel to a second side of the insulated container. The first and second sides can be opposite each other. A pivotable handle can also be attached to a third side of the insulated container. The third side of the insulated container can be attached to each of the first and second sides. The pivotable handle can be positioned such that it is pivotally attached to an end of the insulated container that is opposite to the first and second wheels.
[0137] One skilled in the art will appreciate further features and advantages of the devices, systems, and methods based on the above-described embodiments. Accordingly, this disclosure is not to be limited by what has been particularly shown and described, except as indicated by the appended claims. All publications and references cited herein are expressly incorporated herein by reference in their entirety for all purposes.
[0138] The present disclosure has been described above by way of example only within the context of the overall disclosure provided herein. It will be appreciated that modifications within the spirit and scope of the claims may be made without departing from the overall scope of the present disclosure.
Claims
1.An insulated container, comprising:a housing having;a main chamber configured to receive a cooling agent therein, the main chamber being at least partially defined by a bottom wall; anda secondary chamber configured to receive a drawer therein, the secondary chamber being positioned below at least a portion of the bottom wall;a first wheel rotatably coupled to a portion of a first sidewall of the housing; anda handle extending from a second sidewall of the housing, the second sidewall being connected to the first sidewall.2.The insulated container of claim 1, wherein the bottom wall has a first portion and a second portion, the second portion being offset from the first portion.3.The insulated container of claim 2, wherein the portion of the first sidewall is adjacent the second portion of the bottom wall, and wherein the secondary chamber is below the first portion.4.The insulated container of claim 2, wherein each of the first and second portions of the bottom wall has an incline configured to direct fluid flow towards a drain in a third sidewall of the housing.5.The insulated container of claim 1, further comprising a panel removably positioned within the main chamber, the panel being perpendicular to the bottom wall.6.The insulated container of claim 1, further comprising a panel removably positioned within grooves on an interior surface of each of the first sidewall and a fourth sidewall of the housing, the panel at least partially defining a first compartment and a second compartment within the main chamber.7.The insulated container of claim 1, further comprising the drawer and a channel positioned along an interior surface of a drawer door coupled to the drawer, the channel being configured to prevent fluid flow into the drawer.8.The insulated container of claim 1, further comprising a lid hingedly coupled to the first sidewall.9.The insulated container of claim 1, further comprising a second wheel rotatably coupled to a portion of a fourth sidewall of the housing.10.The insulated container of claim 9, wherein the drain is positioned centrally between the first and second wheels.11.The insulated container of claim 9, further comprising a rod coupled to the first and second wheels, the rod having at least one curve adjacent the drain.12.The insulated container of claim 1, wherein the bottom wall has a plurality of ribs arranged in a hexagonal pattern.13.The insulated container of claim 1, wherein the bottom wall is of a material having a thermal conductivity of about 0.3 W / m K or less.14.The insulated container of claim 1, wherein a ratio of a storage volume of the main chamber and secondary chamber to a total volume of the housing is between about 7: 10 and about 9: 10.15.An insulated container, comprising:a main chamber at least partially defined by a bottom wall;a secondary chamber configured to slidably receive at least one drawer therein;a first wheel positioned on a first sidewall of the main chamber; anda handle attached to an upper portion of a second sidewall of the main chamber.16.The insulated container of claim 15, wherein the bottom wall has an inner surface with a first portion and a second portion, the second portion being offset from the first portion.17.The insulated container of claim 16, wherein the secondary chamber has a secondary bottom wall colinear with the second portion of the bottom wall of the main chamber.18.The insulated container of claim 16, wherein the first wheel is adjacent to the second portion of the bottom wall.19.The insulated container of claim 16, wherein each of the first and second portions have an incline configured to direct fluid flow towards a drain through a third sidewall of the main chamber.20.The insulated container of claim 15, further comprising a panel removably positioned within the main chamber, the panel being perpendicular to the bottom wall.21.The insulated container of claim 15, further comprising a panel removably positioned within grooves on an interior surface of each of the first sidewall and a fourth sidewall of the housing, the panel at least partially defining a first compartment and a second compartment within the main chamber.22.The insulated container of claim 15, further comprising a pair of drawers and a channel positioned along an interior surface of a drawer door coupled to the pair of drawers, the channel being configured to prevent fluid flow into the pair of drawers.23.The insulated container of claim 15, further comprising a second wheel positioned on a fourth sidewall of the main chamber.24.The insulated container of claim 23, further comprising a drain positioned centrally between the first and second wheels.25.The insulated container of claim 23, further comprising a rod coupled to the first and second wheels, the rod having at least one curve configured to accommodate the drain.26.The insulated container of claim 15, wherein the bottom wall has a plurality of ribs arranged in a hexagonal pattern.27.The insulated container of claim 15, wherein the bottom wall is of a material having a thermal conductivity of about 0.3 W / m K or less.28.An insulated container, comprising:a housing having a main chamber and a secondary chamber, at least a portion of a bottom wall of the main chamber being coplanar with a bottom wall of the secondary chamber;a drawer movably disposed within the secondary chamber;a first wheel positioned on a front side of the housing adjacent to the portion of the bottom wall of the main chamber that is coplanar with the bottom wall of the secondary chamber; anda pivotable handle attached to a first end wall of the housing, the first end wall being connected to the front side.29.The insulated container of claim 28, wherein the bottom wall of the main chamber has an incline configured to direct fluid flow towards a drain through a second end wall.30.The insulated container of claim 28, further comprising a panel removably positioned within grooves on an interior surface of each of the front side and a back side of the housing, the panel at least partially defining a first compartment and a second compartment within the main chamber.31.The insulated container of claim 28, further comprising a channel positioned along an interior surface of a drawer door coupled to the drawer, the channel being configured to prevent fluid flow into the drawer.32.The insulated container of claim 28, further comprising a lid hingedly coupled to a back side of the housing.33.The insulated container of claim 28, further comprising a second wheel positioned on a back side of the housing, the back side being opposite the front side.34.The insulated container of claim 33, further comprising a drain positioned centrally between the first and second wheels.35.The insulated container of claim 34, further comprising a rod coupled to the first and second wheels, the rod having at least one curve adjacent the drain.36.The insulated container of claim 28, wherein the bottom wall of the main chamber has a plurality of ribs arranged in a hexagonal pattern.37.The insulated container of claim 28, wherein the bottom wall of the main chamber is of a material having a thermal conductivity of about 0.3 W / m K or less.38.The insulated container of claim 28, wherein a ratio of a storage volume of the main chamber and secondary chamber to a total volume of the housing is between about 7:10 and about 9:10.
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